There is no reason to believe that ad hoc attempts to repair market failures—like determining shadow prices for unpriced social goods, or by exempting social goods from the market, or by use of the law to address social goods that are unattainable through individual choice—are socially inadequate.

the correct answer is economics is a game without winners or losers.

unlike sports or games economic is a game without losers or winner rather it is a game where everyone wins. parties of business doing businesses exchange money with each other and hence exchange is done on the basis of goods. one party takes the goods and other sales it so there is winner on both sides. each party values more highly the good it gets than the good it gives up. both sides exchange only because both intend to increase their value. so there is no concept of lose or win.

the answer is d. many career choices to make.